1. Faculty of Health Sciences Universidad Rey Juan Carlos Madrid Spain
2. SALBIS Research Group, Faculty of Health Sciences Universidad de León León Spain
3. Research, Health and Podiatry Unit, Department of Health Sciences, Faculty of Nursing and Podiatry Universidade da Coruña Ferrol Spain
4. Facultad de Enfermería, Fisioterapia y Podología Universidad Complutense de Madrid Madrid Spain